feat: refine homepage content and expand FAQ

src/styles/global.css

@@ -19,3 +19,11 @@
 .brand{display:flex;width:108px;height:68px;align-items:center;overflow:visible}.brand img{width:100%;height:auto;max-height:66px;object-fit:contain}.footer-logo{display:flex;width:148px;height:100px;align-items:center;overflow:visible;border-radius:0}.footer-logo img{width:100%;height:auto;max-height:96px;object-fit:contain}
 .image-frame{aspect-ratio:1.22}.image-frame img{height:100%;aspect-ratio:auto}.article-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:32px}.article-tab{display:flex;align-items:center;gap:8px;padding:8px 13px;border:1px solid var(--border);border-radius:7px;background:#fff;color:var(--text-secondary);font-size:13px}.article-tab span{color:var(--text-muted);font-size:11px}.article-tab:hover,.article-tab.active{border-color:var(--brand-blue);color:var(--brand-blue)}.article-tab.active{background:var(--brand-accent-soft)}.article-empty{padding:60px;border:1px dashed var(--border);background:#fff;color:var(--text-muted);text-align:center}.article-pagination{display:flex;justify-content:center;gap:7px;margin-top:36px}.article-pagination>a,.article-pagination>span{display:grid;place-items:center;width:38px;height:38px;border:1px solid var(--border);border-radius:6px;background:#fff}.article-pagination .active{border-color:var(--brand-blue);color:#fff;background:var(--brand-blue)}
 .home-hero h1,.page-hero h1,.teacher-layout h2{font-weight:600;letter-spacing:-.025em}.stage-ruler{font-weight:600}.stat-grid strong{font-weight:600}.nav-link{font-weight:500}.mobile-nav__primary{font-weight:600}.need-card>strong,.footer-phone{font-weight:600}
+.workflow-section{background:#f8fbff}.workflow-head{display:flex;align-items:end;justify-content:space-between;gap:48px;margin-bottom:52px}.workflow-head .section-heading{max-width:760px}.workflow-head .button{flex:none;margin-bottom:3px}.workflow-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.workflow-card{position:relative;display:flex;min-height:206px;padding:28px 28px 26px;flex-direction:column;justify-content:space-between;overflow:hidden;border:1px solid #cfe3f7;border-radius:16px;background:#fff;box-shadow:0 8px 24px rgba(29,91,147,.06);transition:transform .25s,box-shadow .25s,border-color .25s}.workflow-card::after{position:absolute;right:-22px;bottom:-34px;width:110px;height:110px;border:1px solid #e4f0fb;border-radius:50%;content:""}.workflow-card:hover{border-color:#9fc9f2;box-shadow:0 14px 30px rgba(29,91,147,.12);transform:translateY(-4px)}.workflow-card__marker{display:flex;align-items:center;justify-content:space-between}.workflow-card__marker::after{width:34px;height:2px;background:#e1edf8;content:""}.workflow-card__marker span{color:#1473e6;font-size:13px;font-weight:800;letter-spacing:.12em}.workflow-card__body{position:relative;z-index:1}.workflow-card h3{margin:0 0 9px;font-size:23px;letter-spacing:-.02em}.workflow-card p{max-width:31em;margin:0;color:var(--text-secondary);font-size:15px;line-height:1.75}
+@media(max-width:760px){.workflow-head{display:block;margin-bottom:34px}.workflow-head .button{display:inline-flex;margin-top:24px}.workflow-grid{grid-template-columns:1fr;gap:12px}.workflow-card{min-height:180px;padding:23px 22px}.workflow-card h3{font-size:21px}.workflow-card p{font-size:14px}}
+.subject-overview{background:#fff}.subject-stage{display:flex;align-items:center;justify-content:space-between;gap:28px;margin-bottom:72px;padding:19px 26px;border-radius:14px;color:#fff;background:#1473e6}.subject-stage>strong{font-size:13px;letter-spacing:.08em}.subject-stage>div{display:flex;align-items:center}.subject-stage span{padding:1px 26px;border-left:1px solid rgba(255,255,255,.28);font-size:14px}.subject-stage b{margin-left:6px;font-size:15px}.subject-overview__head{display:grid;max-width:none;grid-template-columns:1.08fr .92fr;gap:88px;align-items:end;margin:0 0 50px;text-align:left}.subject-overview__head h2{margin-bottom:0;font-size:clamp(40px,4.4vw,60px)}.subject-overview__lead{max-width:720px;margin:24px 0 0;font-size:18px}.subject-overview__intro{max-width:none;margin:0 0 7px;padding-left:28px;border-left:3px solid #1473e6;font-size:16px;line-height:1.9}.subject-overview__grid{grid-template-columns:repeat(3,1fr);gap:0;overflow:hidden;border:1px solid var(--border);border-radius:16px;background:#fff}.subject-card{min-height:164px;padding:27px 28px;align-items:center;gap:19px;border:0;border-radius:0;background:#fff;box-shadow:none}.subject-card:not(:nth-child(3n)){border-right:1px solid var(--divider)}.subject-card:nth-child(-n+3){border-bottom:1px solid var(--divider)}.subject-card:hover{border-color:var(--divider);background:var(--subject-bg);box-shadow:none;transform:none}.subject-card__icon{width:50px;height:50px;border-radius:13px;background:var(--subject-bg)}.subject-card__icon svg{width:28px;height:28px}.subject-overview__grid h3{margin:0 0 8px;font-size:22px}.subject-overview__grid p{font-size:13px}.subject-support-note{display:flex;align-items:center;gap:24px;margin-top:16px;padding:18px 22px;border-radius:10px;background:#f4f8fd}.subject-support-note strong{flex:none;color:var(--brand-blue);font-size:13px}.subject-support-note p{margin:0;color:var(--text-secondary);font-size:13px}
+@media(max-width:1080px){.subject-overview__head{gap:48px}.subject-stage span{padding-inline:18px}.subject-overview__grid{grid-template-columns:repeat(2,1fr)}.subject-card:not(:nth-child(3n)){border-right:0}.subject-card:nth-child(-n+3){border-bottom:0}.subject-card:nth-child(odd){border-right:1px solid var(--divider)}.subject-card:nth-child(-n+4){border-bottom:1px solid var(--divider)}}
+@media(max-width:760px){.subject-stage{display:block;margin-bottom:46px;padding:20px}.subject-stage>strong{display:block;margin-bottom:13px}.subject-stage>div{display:grid;grid-template-columns:repeat(3,1fr)}.subject-stage span{padding:0 9px;text-align:center}.subject-stage span:first-child{border-left:0}.subject-stage b{display:block;margin:2px 0 0;font-size:12px}.subject-overview__head{display:block;margin-bottom:34px}.subject-overview__head h2{font-size:37px}.subject-overview__lead{font-size:16px}.subject-overview__intro{margin-top:30px;padding-left:18px}.subject-overview__grid{grid-template-columns:1fr}.subject-card{min-height:auto;padding:22px}.subject-card:nth-child(odd){border-right:0}.subject-card:nth-child(-n+4),.subject-card:not(:last-child){border-bottom:1px solid var(--divider)}.subject-support-note{display:block;padding:18px}.subject-support-note p{margin-top:7px}}
+.needs-section{background:#f1f7ff}.needs-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:90px}.needs-intro{align-self:start}.needs-intro h2{margin-bottom:24px;font-size:clamp(40px,4.5vw,60px);font-weight:600;letter-spacing:-.035em}.needs-intro>p:not(.subject-overview__label){max-width:430px;color:var(--text-secondary);font-size:17px}.needs-intro .text-link{display:inline-block;margin-top:20px}.needs-intro .text-link::after{margin-left:8px;content:"→"}.needs-list{border-top:2px solid var(--brand-blue)}.needs-list>a{display:grid;grid-template-columns:44px 1fr auto;gap:20px;align-items:center;padding:24px 5px;border-bottom:1px solid #cbdff3;transition:padding .2s,background .2s}.needs-list>a:hover{padding-right:14px;padding-left:14px;background:rgba(255,255,255,.65)}.needs-list>a>span{color:#6d91b7;font-size:12px;font-weight:700;letter-spacing:.1em}.needs-list h3{margin:0 0 6px;font-size:22px}.needs-list p{margin:0;color:var(--text-secondary);font-size:14px}.needs-list>a>strong{color:var(--brand-blue);font-size:12px;font-weight:600}.needs-context{display:grid;grid-template-columns:auto 1fr 1.25fr;gap:22px;align-items:center;margin-top:48px;padding:20px 24px;border:1px solid #cbdff3;border-radius:10px;background:rgba(255,255,255,.62)}.needs-context strong{color:var(--brand-blue);font-size:13px}.needs-context p{margin:0;color:var(--text-secondary);font-size:13px}.needs-context p:last-child{padding-left:22px;border-left:1px solid #cbdff3}
+@media(max-width:760px){.needs-layout{grid-template-columns:1fr;gap:42px}.needs-intro h2{font-size:38px}.needs-intro>p:not(.subject-overview__label){font-size:15px}.needs-list>a{grid-template-columns:34px 1fr;padding:22px 0}.needs-list>a>strong{display:none}.needs-list h3{font-size:20px}.needs-list p{font-size:13px}.needs-context{display:block;margin-top:34px;padding:20px}.needs-context p{margin-top:8px}.needs-context p:last-child{margin-top:14px;padding:14px 0 0;border-top:1px solid #cbdff3;border-left:0}}
+.hero-subhead span{display:block}.hero-subhead span+span{margin-top:3px}